Universal Sensor (narrowband)
| Brand | Bosch |
|---|---|
| Model | "Universal" |
| Output Type | Voltage 0 to 1V |
| Sensor Type | Various |
| Heater | In 4-wire models |
| Controller | Not required, direct connection |
The typical installation is a fixed installation in the exhaust pipe, a few centimeters after the manifold junction as explained here.
IMPORTANT
It is necessary to respect the general mounting conditions to ensure safety and avoid breakage. This type of sensor cannot be used at the exhaust pipe outlet as it needs heating that can only be provided when mounted close to the engine output. The heater wires are necessary for the sensor to start measuring faster but are not enough to heat the sensor by themselves.
Connection to Accudyno
| Cable/Color | Function | GO/PRO | Gyra/Forza |
|---|---|---|---|
| Black | Signal (+) | Accudyno IN+ (AFR Pin 3) | AIN1 |
| Gray | Signal ground(-) | Accudyno IN- (AFR Pin 2) | GND |
| White | Heater(+) | 12V Battery(+) | |
| White | Heater(-) | 0V Battery(-) |
Calibration
This type of sensor does not have a calibratable linear output. It is a sensor that has a lot of variability between units, meaning that two sensors purchased at the same time may have slightly different readings.
The Accudyno system has a proprietary calibration table that approximates the reading values of a narrowband lambda sensor but only works in very rich mixture zones. Thanks to this, it is possible to use them in a somewhat useful way in dynamometers. For better precision, you should acquire a wideband sensor with its controller.